<template>
  <div id="subtmpl">
    <div class="inleft div" @click="substrict">-</div>
    <div class="incenter div" v-text="count"></div>
    <div class="inright div" @click="add">+</div>
  </div>
</template>
<script>
  export default {
    data(){
      return {
        count:1
      }
    },
    methods:{
      substrict(){
        this.count--;
        if(this.count<1){
          this.count=1
        }
        this.sendmessage()
      },
      add(){
        this.count++;
        this.sendmessage();
      },
      sendmessage(){
        this.$emit('dataobj',this.count)
      }
    }
  }
</script>
<style scoped>
  #subtmpl .div{
    width: 40px;
    height: 25px;
    line-height: 25px;
    border: 1px solid #000;
    display: inline-block;
    text-align: center;
  }
</style>